Republican challenger Ron Johnson continues to earn more than 50% of the vote in his U.S. Senate bid against incumbent Democrat Russ Feingold in Wisconsin.

The latest Rasmussen Reports telephone survey of Likely Voters in Wisconsin finds Johnson with 52% support. Feingold, who has represented the state in the Senate since 1993, earns 45% of the vote. Two percent (2%) are undecided. (To see survey question wording, click here.)

Two weeks ago, Johnson, a wealthy plastics manufacturer, held a 54% to 42% lead over Feingold. In surveys since May, Johnson’s support has risen from 44% to a high of 54%. Feingold in that same period has picked up 42% to 46%.

The survey of 750 Likely Voters in Wisconsin was conducted on October 11, 2010 by Rasmussen Reports. The margin of sampling error is +/- 4 percentage points with a 95% level of confidence. Field work for all Rasmussen Reports surveys is conducted by Pulse Opinion Research, LLC. See methodology.

Rasmussen Reports will release the latest numbers from Wisconsin’s gubernatorial race later this week.

Which candidate holds a double-digit lead in voter favorability? Barack Obama carried Wisconsin with 56% of the vote in 2008. How do voters in the state view his performance these days? Become a Platinum member and find out.

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